Well plunger



' Mar-ch 7, 1933.

J. w. P|PP|N WELL PLUNGER Filed Feb, 17, 195o Patented Mar. 1, 1.933

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or' Numa COUNTY, muxas, .um ONE-HALF Ol' OOUNTY, TEXAS assrenoit or drm-null r1:0* n. n. Gnus, 'ro w. F. HALL AND GEORGE mwnmr,

WELL PLUNGEB Application illed February 17, 1930. Serial No. 429,189. 4

My invention relates to well plungers and has as one of its objects the provision of a well plunger wherein the various parts whichare connected together by screw 'l threads are prevented from becoming loosened orvdetached.

Further the invention provides a well plunger having means for causing the liquid passing therethrough to exert a torque upon the threadedlyconnected parts so 'thatthey cannot workloose.- l

Another object of the invention is to provide a well plunger which is equipped with buing elements so that the working barrel will be polished incident tothe reciprocation of the plunger andl thereby cause-the latter to operate in a smooth manner and lcause the lifting cups to wearlonger.

The invention also contemplates a well plunger having a ball. valve which is instantaneously actuated to closed position after each down stroke'ofy the plunger `and which is cushioned against the impact `of the upwardly ilowing'v` liquid.

'25. Ity is "anotherobject of` the invention4 to 'provide a well plunger `which embodies a mechanismwhereby the vstanding valve may be positively picked up or coupled' to the plungerso that the standing valve maybe 3 lifted out when desired. y

With the preceding and other objectsand advantages in mind, the-invention consists in the novel combination of elements, constructions and' arrangements of parts and operations to be hereinafter more fully delscribed, claimed and illustrated in the. accompanying drawing, wherein:

Figure 1 is an elevation of my improved well plunger in working position and coupled to the standing valve;

Fig. 2 is showing the upper half of the plunger;

Fig. 2a is a similar view showing the lower' half of the plunger;

gaged-'with the interior screw thread. and

- Depending. fromy the against an enlarged longitudinal section Fig. 3 is a horizontal section taken on the line 3--3 of Fig. 2; l Fig. 4 is a similar view taken on the line 4-4 ofFig. 2a; and v Fig. 5 is an enlarged detail viewv illustrating the plunger in the act of being coupled to the standing valve. l l

Referring to the invention in ydetail a cylindrical ball cage 5 having an interiorly threaded upper end 6 and an interiorly threaded lower end 7, is provided. Arranged below the'ball cage 5 is a verticallyextending conduit orV pipe 8 having acir- ,c'ular exteriorly threaded head 9 which is threadedly engaged Withthe threads 7. The

upper face of the head 9 is formed with a concavity or seat upon which a conventional ball valve-11 normally seats.

A cup-shaped member 12 is threadedly en.

depends within the ball cage 5 and has inlet openings 13 therein. 1

bottom wall of the cup shaped"member and located in vertical alinement withy theball valve 11 isv a stem f `14. Slidably received-on the stem 11i is a sleeve 15`having a circular head .16` whose under`faceisshaped to conformv to the ball valve as shown.` An expansible coil spring 17 is received on the stem with one end bearing against the bottom' wall ofv the cupshaped member and its opposite end bearing the upper end of the sleeve 15 and normally presses the ball valve against its seat.- Radial ports 18 are provided in the sleeve -above the circular head 16 so' that some of the liquid will find its way into the sleeve and cooperate'with the spring 17 in cushioning' the ball 11 when the latter is forced from its seat by ling liquid.- 2

Arranged above the ball cage 5 is a -ver tically extending pipe or conduit 19 having its lower .end threaded into the upper en 20 and its 90 of the cup-shaped member as at the upwardly travelf upper end threaded into a head 21 as indicated at 22. The head 21 is provided with a hollow frusto-conical shaped upper end 23 having radially disposed outlet openings 24. A coupling shank 25 isformed with the upper end of the head and is connected to the usual pump rod 26. l

Arranged below the conduit or pipe 8 and in longitudinali' alinement therewith is a conduit or pipe 27 which is formed with a coupling collar 28 at its upper end which is threadedly engaged with the lower-end of the conduit. or pipe 8. The vusual leather oups 29 and spacer elements 30 are lreceived on the conduit or pipe 8 and are held in place by the head 9 and coupling collar 28. In order to polish the interior of the working barrel during the reciprocation of the plunger builing rings 31 are arranged on the pipes or conduits 19 andl 27. Preferably these bufling rings are formed from any suitable durable iber or combination of cotton and rubberized material. However, these rings may be formed from any material having characteristics which will smoo'th or polish a metallic surface. i

The buing rings are of a diameter slightly greater than the ball cage 5 and arranged between the same are metallic spacer rings 32, the latter having their opposite faces bevelled towards the inner edges of the` ring.

'From the description thus far given it will be seen that the interior of the working barrel will be continuously polished above and "below the leather cups 29. Thus a smooth polished working surface will always be maintained. This not lonly causes a smoother operation of the barrel but adds' materially to the life of the cups in that they will not be. cut or subjected to undue friction. y

Means are `provided for exerting a torque on the plunger to prevent theV various threaded connections from becoming loosened or uncoupled and comprises a cylinder 33 having one end threaded on the lower end of the pipe or conduit 27 and engaging the bottom most ring 32. Extending longitudinally in the cylinder is a spiral blade 34 which extends parallel to'the side walls` of the cylinder, and lies against the same. The blade is relatively narrow in cross section to'present a relatively narrowv lower spiral surface 35 with which the oil .makes impact as it flows. through the cylinder. It will be seen that this arrangement does not obstruct the flow through the cylinderand yet the liquid striking the surface 35 exerts suiicient torque as to maintain the various threaded connections tight. Not'only are the threaded connections of the plunger held against loosening, but the various pump rods are 'maintained infthreaded engagement.

The invention also contemplates means for by means of laterally against the head 38.

The upper end of the standing valve 36 is y in its lower end and which registers with a bore 42, rectangular in cross section, provided in the shank 37 and head 38. The thimble is swivelly connected with the shank extending lugs 43 formed upon the interior of the thimble at diametrically opposite points and which are received in a circumferential groove 44 formed on the shank adjacent at its lower end. A shank 45 rectangular in cross secr tion is slidably mounted in the bore 42 and projecting into the cylinderv33. '00

has one end A nut or other abutment 46 is received on the inner end of the shank. Th'e lower end of the shank is provided with a rounded screw threaded part`47 which has threaded engagement with the threaded opening 41. The thimble is prevented against rotation by a coil spring 48 encircling the inner end ofthe shankwith one end engaging the abutment 46 and its opposite end bearing formed with a central threaded opening 49 which is 'located in vertical alinement with the opening 31 in the tliimble.- A-key-way 50 is also provided in the upper face of the standin key 51 ormed on the under face of the thimble 40. As disclosed in Fig. 5 the threaded part 47 thimble. .However, when it is desired to pick up the standing valve the plunger is lowered until the key 51 enters the key-way 50 in thelstandin valve. With the parts in this position t e threaded openings 41 and 49 in the thimble and standing valve respectively are in registration. The plunger is .now rotated and dueto the fact that valve and is adapted to receive a- -is normally retracted within the the thimble is hel`d stationary by its engegement with the standing valve the threa part' 47 is fed outwardly through the threads 4l'and threaded into the opening 49, as dis-y The standing valve can the working barrel by chamber, said cup-shaped member having a an axial passage, thei plurality of lateral passages placing the .A chamber in communication withuthe passage in the plunger, a stem projecting from the free end of the cup-shaped member, a sleeve j 'slidably 'mounted on the stem and havin a head provided with a curved face, a va ve seat at the lower end of thechamber, a ball valve on the seat and normally engaged by the curved fame, a sprin .on the stem and engaging at one end the ree end of the cup# shaped member and at its other end the sleeve for maintainin the Valve on its seat.

OHN W. PIPPIN.

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